Topic 4.5: Wave Properties Flashcards

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1
Q

Define Refraction

A

o REFRACTION: Change of direction at a boundary due to different wavespeed

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2
Q

• 4.5.2: State and apply Snell’s law

A

SNELL’S LAW: For two particular media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant.

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3
Q

Define diffraction

A

o DIFFRACTION: The spreading of waves when they pass through an opening or round an obstacle.

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4
Q

Define superposition

A

o SUPERPOSITION: When two waves pass the same point at the same time, their displacements are added together to calculate the resultant displacement.

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5
Q

Define interference

A

o INTERFERENCE: Superposition of coherent sources resulting in an interference pattern.

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6
Q

Define constructive/destructive

A

o CONSTRUCTIVE/ DESTRUCTIVE: Interference in which the resultant is reinforced/ cancelled.

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7
Q

Define coherent

A

o COHERENT: Sources of waves with a constant phase difference are coherent.

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